function popUp(URL, w, h) {
		var winl = (screen.width-w)/2;
		var wint = (screen.height-h)/2;
		day = new Date();
		id = day.getTime();
		eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width="+w+",height="+h+",left = "+winl+",top = "+wint+"');");
	}